Maas, O. <br/><br/>
Die medusen. Vol.23 

 - Cambridge  Printed for the Museum  1897 
 - 92p.  30cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Siphonophorae
<br/><br/><label>LC Class. No.: </label>QTO QL1.H35 Vol.23 no.1